Car roof



ct. 3, 1933. c. D. BoNsALL CAR ROOF Filed July 3, 1931 Patented Oct. 3,

, t a yfoma noot" Charlesilllavid Bonsall, Pittsburgh, Pa., assignor to R4H. Murphy; Company, NewKensington,

o' Pasa eorporationof PrermSylvanial v p y Appnqatnnruiy s; 193,1; sensing. 548,527 j 1c Claim.` moi. V10s-5.4i`

Thisv invention relatesy to car roofs and incre particularly to car'roofs of the type shown inv Patent lN,'l,33(),975, datedr February L17,

f 1920, lwherein'the metal roofysheetsspalfthe 5 car fromside plate to `side plateof the car and a are rigidly secured together along their adjacent margins by hollow" opstanding seams that yfunction ras exterior roof sui'iportingcanines.v

The principal object or the 'present invention is to `reinforce yand strengthen the Aroof seams and thereby increasethe loadcarrying ycapacity of thev roof.; Other objects are simplicity yand cheapness of construction and compactness of design, The invention consists in theparts and arrangements vand combinations of parts herein# after described andclairned.

" In the vaccompanying draWingzfwhich forms `part of thisspecication and wherein like sym'- bols referto like partsnwhereverthey occur,

j; Fig. 1 is ar plan view of a portion ofthe car roof embodying my invention, t

t Fig. 2 is ay vertical cross ection through one-y half of the roof onthe line v2 2 in Fig. l, i f `Fig is a longitudinalcross-section through the roof at the ridgathe section beingtaken at one of ltheseams on the line 3--`3 inFig. 2; and Fig. i is across-sectionlthrough the seam ad-` jacentto the eaves on thelinee-l in Fig. 2.*4

Referring 4to the accompanying drawingy myy A inventionfisshown in connection with Ian all- Vsteel riveted-up roof comprising pitched rnetal roof sheets A extending from side plate B to side plate Bof the car andare rigidly connected along their adjacent sideinargins byhollow opstand- 35 ing seams C," which function as prooi" supporting carlines. The side platesB are'preferably or substantially. 'ZL-shaped cross-section A and are `arranged with their inner flanges l fupstanding; and the roofy sheets A are provided withv depend, ing eaves" anges `2xthat overhang fand'fare rigidly secured to theU outer `iaces Vof said side plate flanges( by horizontal rivetsB` a i `The yroof sheets are provided along theirad-I jacent vside marginsivith raised seam flanges i that areoverlapped to forinthe hollow up- `ilanges gradually diminish indepth frorn the ridge towards the eaves and "gradually change from a `substantially invertedj Lrshaped section depending eaves iianges 2. `to theveaves, .wherethe outer walls of the inverted channel-shaped portions'of the side mar` ginal seam flanges 4 reach the plane ofthe roof sheets, said walls are turned outwardly to formstanding seams C. The side marginaly seamy sheets whereth'ey are turned down ltotorrn they At points adjacent the iianges l5. `*The overlappedside marginal seam flanges kl of adjacent'roof sheets are rigidly secured together throughout their length prefer` ably bymeans of rivets 6 that pass through ythe overlapped ltop portions thereofl i.; kvin order fto stiien and ^strengthen ythe Whole rooffsorne `or all of the rupstanding seams or carline/ portions' -C thereof arestrengthened and stii effe/ned by means of a metal reinforcing members D ot substantially Z-shapedy cross-section that exn tend transversely of the car from side plateto ers yD is preferably arranged outside'of the car with its web 7 disposed parallel with one side side plate alongside of said searns. .As shownin l y the drawing, each of these seam reinforcing hiern-- wal-l ofthe seam C, with itsUbottom `iiange 8 s riveted or otherwise rigidly secured to the body portionwof onemsheet; and :with its top `flange 9 overlapping the Atopjof said seam` and secured thereto bythe rivets 6 that secure together the cooperating seam angesvtf rl"hez-shaped seam reinforcingmeinber D is disposedparallel to the longitndinalaxis of thesearnl and is preferably thicker than `the sheets'. andarranfged withy its Web vportion 'ifspacedffrornthe adjacent side of the roof sheet Ato yforin a' hollowfbox girder. f The .seam reinforcing-fmernber D, is ot a depth correspondingsubstantially tothe ,depth of the seam; and likewise saidvmember gradually decreases in depth on opposite sides oftheridge and hasdownwardly curved end. portions that corren spondto theA downwardly curved eaves end perf," l

tions'of said seam. At the ends of the sean; re-

iniorcinginember Dthe upper flange 9 thereofv i i f r,

s p "f wall of the searn C and thus cooperates with said i y wall of said seam andthe adjacent body portion f ico uniform width; and in consemiencev .of the taper-v ing of said member theb'ase flange 8 thereof increases in Width from the' ridget'o ythe eaves,

y therebyprovidingwide bearings at the side' plates. 1 f

the arrangementdescribed, "the 2f-shaped `searn reinforcing members are rigidly secured to? f, 1,10 i

theyl r'oof` sheets `and to the side-f plates yand are adapted `by their structuretand Vposition to increase thestrength and load capacity of vthe 'i roof; vand .they yalso serve to prevent rthe 'seam rivets'yffipin pulling through'the-roof sheets, and the sheetlflanges" fromk buckling betweensaid rivets. l They seam reinforcingmembersare also especially well adapted .to oier `resistance to,` torsional stresses that tend to rack and weave the car body and to the horizontal stresses that tend to throw the car out of square.

greater thickness than the sheets extending longisecured together along their adjacent-margins by raised lap seams, and a reinforcing member extending longitudinally of a seamwith its ends I secured to the side members of the car, said member having a fiange that overlaps and is riveted to the top of said seam and a flange that is riveted to the body portion of one of the roof sheets at one side oi' said seam, the portion of the reinforcing member between said flanges being spaced horizontally from the adjacent side wall of said seam. Y

3. A car roof comprising roof sheets rigidly secured together along their adjacent margins by upstanding seamsyand a Z-shaped'member of tudinally of a seam with its web extending alongside one side wall of said seam, with its ends se-A cured to the side plates ofthe car and with one fiange overlapping and riveted to the top ofsaid seam and with rthe other flange riveted to the body portion of onesheet adjacent to said side wall of said seam.

` 4. A car roof comprising roof sheets rigidly secured together along their adjacent margins by upstanding seams, and a Z-shaped member extending longitudinally of a seam with its web extending alongside one side wall of said seam, with one flange overlapping and riveted to the top of said seam by the rivets which secure said seam andl with the other` flange riveted to the body portion of one sheet adjacent to said side wall of said seam, said web portion decreasing in depth from the middle of said reinforcing member to the ends thereof and said .last mentioned flange increasing in width from the middle of said reinforcing member to the ends thereof.

'5. A car roof comprising roof sheets rigidly secured together along their side margins by hollow upstanding seams, the construction of some of said seams comprising marginal portions of adjacent sheets raised and lapped, and a Z-shaped member of greater thickness than the sheets extending longitudinally of a seam with its ends riveted to theside plates of the car and with its web portion disposed alongside of one of the side walls of'said seam, with its upper flange overlapping and rigidly secured to the top of said seam and with its bottom flanger rigidly secured to the body portion of the sheet located adjacent to said side wall of said seam.

6. A car roof comprising roofV sheetsv rigidly secured together along their side margins by hollow upstanding seams, the construction of some of said seams comprising marginal portions of adjacent sheets raised' and lapped, and a Z-shaped member extending longitudinally of a seam with its web portion disposed alongside of one of the side walls of said seam and parallel to the longitudinal axis thereof, with its upper flangeoverlapping and rigidly secured to the top of said seam and with its bottom flange rigidly secured to the body portion of the sheet located adjacent to said side walll of said seam, said reinforcing member extending from eaves to eaves of the car and rigidly secured thereto. 4

7. A car roofcomprising roof sheets' extending `from side plate to side plate and rigidly secured thereto, said roof sheets being provided along their adjacent margins with seam flanges that are overlapped and rigidly secured together to form seams, and a reinforcing member extending longitudinally of a seam from side plate to side plateand rigidly vsecured thereto, said reinforcing member being secured to the overlapped seam flanges of adjacent sheets and to the body portion of. that sheet which is lowermost at the seam. f

8. A car roof comprising roof sheets extending from side plate to side plate and rigidly secured thereto, said sheets being provided along their adjacent side margins with seam flanges that cooperate to form hollow upstanding seams, and a Z-shaped reinforcing member located alongside of a seam and extending from side plate to side plate with its ends rigidly secured thereto, said reinforcing member being arranged with its web alongside of but spaced from one side wall of said seam throughout its length, with its upper flange overlapping and rigidly secured to the top of said seam and with its lower flange rigidly secured adjacent to said side wall of said seam to the body portion of that sheet which is lowermost'at the seam.

9. A car roof comprising roof sheets extending from side plate to side plate and rigidly secured thereto, said sheets'being provided along their adjacent side margins with Vseam flanges that cooperate to form hollow upstanding seams, and a Z-shaped reinforcing member located alongside oi a seamA and extending from side plate to side plate with its ends rigidly secured thereto, said reinforcing member being arranged with its web alongside of one side wall of said seam, with its upper flange overlapping and rigidly secured to the top of said seam and with its lower flange rigidly secured adjacent to said side wall of said seam to the body portion of that sheet which is lowermost at the seam, said web portion of said reinforcing member being spaced throughout its length from said side wall of said seam.

10. A car roof comprising roof sheets extending from side plate to side plate and rigidly secured thereto, said sheets being provided along their adjacent side margins with seam flanges that cooperate to form hollowupstanding seams, andA a Z-shaped reinforcing member located alongside of a seam and extending from side late to side plate with its ends rigidly secured thereto, said reinforcing member being arranged with its 4web'alongside of one side wall of said seam and parallel to the longitudinal axis thereof, with its upper flange overlapping and rigidly secured to the top of said lseam by rivets which extend through said sheet flanges and with its lower flange rigidly secured adjacent to said side wall of said seam to the body portion of that sheet which is lowermost atthe seam, said web portion of said reinforcing member being spaced throughout its length from said side wall of said seam, said seam and said reinforcing member being of gradually decreased depth from ridge to eaves and said base flange increasing in width from ridge to eaves.-

CHARLES DAVID BONSALL. 

